Manning Coles 
No Entry [EPUB ebook] 

Thomas Hambledon quicksteps from the Western Zone of Germany to the Eastern to locate the missing son of a man most important in atomic defense. His plottings are paralleled by the adventures of young Micklejohn who, escaping his Russian captors, is hidden by an underground group. Hambledon impersonates a Russian agent, and, across the frontier, picks up Micklejohn’s trail but can they race back to safety?